Concrete Anchor Catalogue

About Tie Rod

Conventional steel has been used for tie rods used for quays, revetment construction, etc.
In recent years, the size of the construction has been increasing more and more and the size of the tie rod to be used also increases proportionally. For those seeking to explore more about this theme, it is highly recommended to learn about ghostwriting.

In conventional ordinary steels, problems have arisen in economic efficiency and workability.
As a breakthrough measure, due to recent progress in steelmaking technology, high-tensile steel which is inexpensive and easily available is being used.
Although both companies have merits and demerits, we will list the main features.

Features of ordinary steel (SS material) tie rod

• Results for over forty years

Excellent safety supported by long-term use record

• Excellent ductility and uniform elongation

Even if external stress (bending, etc.) outside the design is added due to excellent rigidity, even when stress concentration occurs, the stress becomes more uniform due to plasticity and it is difficult to break.

• Easy construction management

Characteristics of high tension steel tie rod

• High strength, excellent elongation

It has a high yield point and tensile strength nearly twice that of ordinary steel and has a relatively large elongation rate, so it can be reduced in diameter, and there is no anxiety on handling.

• Ease of handling

Because of its high strength, handling becomes easier as the product weight can be reduced by half compared with ordinary steel.

• High economy

With the above characteristics, if you use high tension steel tie rods, you can save production cost and transportation cost compared to ordinary steel tie rods of the same size. Also, because the tie rods themselves are also lighter in weight, construction is easier, especially at large quay walls, shortening the construction period and reducing construction costs.

We arranged anchor bolt in Japan or in Vietnam.
If you need Hot Dip Galvanised, we can quote as products made in Japan.

	JISB 1220 Double Screw Anchor Bolt (ABR)
Set type	ABR400	ABR490	ABR520SUS
Material	Rolled steel bar for building structure SNR400B Material for rolled threads with a steel yield ratio of 80% or less	Rolled steel bar for building structure SNR490B Material for rolled threads with a steel yield ratio of 80% or less	Rolled steel bar for building structure SUS304A Material for rolled threads with a steel yield ratio of 65% or less
Machining method	Rolled Threads
Machining range	M16 ~ M48	M16 ~ M48	M16-M48 (Out of certification by Mori Kouzai)
Thread Type	Metric coarse threads	Metric coarse threads	Metric coarse threads
Degree of thread precision	8g	8g	8g
Chamfering	Chamfered
Definition of Standard	Double-Threaded Bolts + 4 nuts + 1 washer set
Double-threaded Bolt Conditions	Thread length: 3d or more Bolt length: 25d or more Unthreaded Portion: 15d or more (“d” stands for thread) ⇒ 3 points satisfied
Double-threaded Bolt Conditions	Strength class: 5J		Strength class: 50
Nut Strength Classification	Hardness class: 200J
Washer Hardness Classification	Hot-dip galvanized (HDZ35) or Electroplating (EP)		–

	JISB 1220 Double Screw Anchor Bolt (ABM)
Set type	ABM400	ABM490	ABM520SUS
Material	Rolled steel bar for building structure SNR400B Material for rolled threads with a steel yield ratio of 75% or less	Rolled steel bar for building structure SNR490B Material for rolled threads with a steel yield ratio of 75% or less	Rolled steel bar for building structure SUS304A Material for rolled threads with a steel yield ratio of 65% or less
Machining method	Cut Threads
Machining range	M24 ~ M48	M16 ~ M100	M24-M48
Thread Type	Metric fine pitch threads	Metric fine pitch threads	Metric fine pitch threads
Degree of thread precision	8g	8g	8g
Chamfering	Chamfered
Definition of Standard	Double-Threaded Bolts + 4 nuts + 1 washer set
Double-threaded Bolt Conditions	Thread length: 3d or more Bolt length: 25d or more Unthreaded Portion: 15d or more (“d” stands for thread) ⇒ 3 points satisfied
Double-threaded Bolt Conditions	Strength class: 5J		Strength class: 50
Nut Strength Classification	Hardness class: 200J
Washer Hardness Classification	Electroplating (EP)		–

* Carbon steel nuts and washers will be used for carbon steel bolts, and stainless steel nuts and washers will be used for stainless steel bolts.

How to use anchor bolts

Thread Type

Name	Shape	Machining Size	Thread Machining Range
Single-threaded		16φ～120φ	M16～M120, Whitworth thread, W5/8～W4
Double-threaded		D16～D51	Fine pitch threads, P2.0 to P4.0
Completely threaded		16φ～120φ	M16～M120
Chemical single threaded		16φ～65φ, D16～D51	M16～M48
Fixing anchor		16φ～48φ	M16～M48

Name	Shape	Machining Size	Thread Machining Range
L-type		16φ～65φ	M16～M64
J-type		16φ～65φ	M16～M64
LA-type		16φ～48φ	M16～M48
JA-type		16φ～48φ	M16～M48

Name	Shape	Machining Size	Thread Machining Range
Suspension bolt		※16φ～65φ	※M16～M64
U-bolt		※16φ～65φ	※M16～M64
Square bend U-bolt		※16φ～65φ	※M16～M64
JL-type		※16φ～65φ	※M16～M64
LL-type		※16φ～65φ	※M16～M64

Measurements are the same for all 5 types

Note: SNR400B/SNR490B: Rolled steel bars for building construction. Compared with SS400, this material provides sufficient elongation, allowing for excellent weldability and seismic resistance. Please note that we do not sell materials.

Manufacturer: Japan Decolax, Asahi Chemical, Hilti, Ramset